Swivel rope-socket for well-drills.



PATENTED MAY 14, 1907.

0. E. LINDHOLM. SWIVEL ROPE SOCKET FOR WELL DRILLS.

APPLICATION FILED JUNE 27. 1906.

, INVENTOR OSCAR E.LINDHOLM W/ TNE SSE S ATTORNEYS longitudinal section.

UNITED STATES PATENT OFFICE.

SWIVEL ROPE-SOCKET FOR WELL-DRILLS.

Specification of Letters Patent.

Patented May 14, 1907.

Application filed June 27,1906. Serial No. 323,586.

1'0 all whom it may concern:

Be it known that I, OSCAR EDWARD Lino I-IOLM, a citizen of the United States, and a resident of Roy, in the county of Mora and the Territory of New Mexico, have invented a new and useful Improvement in Swivel -Rope-Sockets for Well-Drills, of which, the

following is a specification.

The cables employed in drilling wells, whether made of wire or manila fiber, are composed of strands each twisted separately and the whole then twisted together. In drilling the cable is under strain when lifting the drill tools, and hence it then untwists to a certain degree so that the drill is turned correspondingly; but-when the drill drops, the cable being more or less slack, it twists'back or resumes its, full twist. A swivel is in troduced between the cable and the drill, and when the weight of t' 1e drill tools is imposed -on the cable, the friction of the swivelf prevents it from acting, that is rotating, but when the weight is released, the swivel turns readily. I have devised and put in successful practical use an improved swivel for'this purpose.

The details of construction,- arrangement, and operation of my invention are as hereinafter described, reference being had to the accompanying drawings in which,

Figure 1 is a view in which main portion of my swivel rope-socket is shown in central Fig. 2 is a side view of the entire rope-socket. I section on the line 33 of Fig. 1.

A indicates the cylindrical body of the,

swivel socket to which the wire rope-socket B, and the manila ro e-socket C, are connected. The rope-soc et B, is tapered interiorly and exteriorly, and provided with a cylindrical portion 1) which is threaded "and shouldered to adapt it to be screwed into the upper end of the body section A. To prevent its accidental detachment by rotation,

a cross-pin b is inserted through the threaded parts as shown.

In practice, the end of the wire cable is inserted in. socket B, and spread at its lower end and secured in place by Babbitt metal. The manila rope-socket C is loosely jointed to a screw-eye D, which is provided with a shoulder d; The latter abuts a corresponding shoulder a formed at the lower end of the body section A. The threaded shank d of the eye D projects into the chamber a formed in the upper portion of the body see- Fig. 3 is a horizontal 1 tion A., and is detachably secured in lace by means of the nut E, whose lower en is beveled and abuts a beveled shoulder a of the body section A. The nut is also tapered or reduced in diameter from the lower end up- ,wardly so that it does not come in contact with the sides of the chamber a. In order to prevent its accidental detachment it is keyed and secured to the shank d-by means of a cylindrical screw d same having a nick to receive a screw-driver, by which the screw may be readily inserted or removed. In such case the screw-driver would be inserted through the opening in the top of the coupling.

It is apparent that by the construction and arrangement of partsdescribed, I provide for socket B, and of the manila ro e-socket C, or rather for detachment of the t eaded eye D, to which the manila rope-socket O is jointed. I also further provide a bearin for the eve D, whichlenablesit to turn easi y in the body section A, at the same time that it may be conveniently detached when required. In brief, I rovide an improved swivel ropesocketwliich is distinguished by simplicity, strength, and'durability, also ease of detachment of its parts, and ease of rotation of the rope-sockets relative to each other.

I What I claim is l ,T he improved swivel rope-socket comprising the wire-rope socket which is tapered exteriorly and interiorly, a chambered body section A, with which the said socket is detachably connected, said body havin' a beveled shoulder at the bottom of its 0 amber and a corresponding beveled shoulder a in its lower end; the manila rope-socket O, and the screw-eye D with which it is loosely jointed,

said screw-eye having a reduced and threaded shank that projects into the chamber of the body, and a beveled shoulder 11 corresponding to the exterior shoulder of the body, a nut E applied to the shank of the screw-eye and having its lower end tapered corresponding to the adjacent shoulder of the body, the

.sides of the nut being inclined inward from the bot-tom upward; and a locking device applied to the nut for preventing its accidental rotation, substantially as described.

OSOAR EDWARD LINDHOLM.

W'itnesses JACOB FLOERSHEIM, LESLIE E. ALLDREDGE.-

the upper end of the convenient detachment of the wire rope- ICC 

